Effects of vitamin A deficiency and ked resistance on the feeding of Dermacentor andersoni on sheep.
D000821:Animal Feed; D000818:Animals; D004478:Ectoparasitic Infestations / Q000662:veterinary*; D006168:Guinea Pigs; D012621:Seasons; D012756:Sheep; D012757:Sheep Diseases; D013984:Tick Infestations / Q000662:veterinary*; D013987:Ticks; D014802:Vitamin A Deficiency / Q000662:veterinary*